2005 MERCEDES-BENZ CLK320 CABRIOLET cooling

Contents
Control system .................................. 133
Multifunction display .................... 133
Multifunction steering wheel ........ 134
Menus .......................................... 136
Standard display menu ................ 138
AUDIO menu ................................ 139
NAV* menu .................................. 141
Vehicle status
message memory menu ............... 141
Settings menu .............................. 142
Trip computer menu..................... 158
TEL menu* ................................... 160
Automatic transmission ..................... 163
One-touch gearshifting................. 165
Gear ranges ................................. 166
Gear selector lever position ......... 167
Automatic shift program .............. 169
Driving tips ................................... 170
Steering wheel gearshift control
- CLK 500 and CLK 55 AMG ......... 171
Manual shift program
CLK 55 AMG ................................ 173
Emergency operation
(Limp Home Mode) ...................... 175Good visibility ..................................... 176
Headlamp cleaning system* ......... 176
Rear view mirrors.......................... 176
Sun visors ..................................... 178
Rear window defroster .................. 179
Climate control (CLK 320) .................. 180
Deactivating the
climate control system ................. 183
Setting the temperature................ 183
Adjusting air
distribution and volume ................ 184
Defrosting ..................................... 185
Air recirculation mode .................. 186
Air conditioning............................. 187
Rear passenger compartment
adjustable air vents....................... 189
Automatic climate control
(CLK 500/CLK 55 AMG)..................... 190
Deactivating the automatic
climate control system ................. 193
Setting the temperature................ 193
Adjusting air distribution............... 194
Adjusting air volume ..................... 194
Defrosting ..................................... 195
Maximum cooling MAXCOOL ........ 195
Air recirculation mode .................. 195Charcoal filter ............................... 197
Air conditioning ............................ 198
Residual heat and ventilation*
(available on Automatic climate
control panel design A only) ......... 199
Rear passenger compartment
adjustable air vents ...................... 200
Audio system...................................... 201
Audio and telephone, operation .... 201
Operating safety ........................... 201
Sound system* ............................. 201
Operating and display elements ... 202
Button and soft key operation ...... 204
Operation...................................... 204
Radio operation ............................ 209
Introduction to satellite radio*
(USA only) ..................................... 213
CD mode....................................... 218
GSM network phones ................... 224
TDMA or CDMA network phones .. 231
Emergency calls “911” ................. 237
Power windows .................................. 239
Opening and
closing the windows ..................... 239
Synchronizing power windows ...... 243

54 Getting startedDrivingProblems while driving
The engine runs erratically and misfires

An ignition cable may be damaged.


The engine electronics may not be op-
erating properly.


Unburned gasoline may have entered
the catalytic converter and damaged it.

Give very little gas.

Have the problem repaired by an au-
thorized Mercedes-Benz Center as
soon as possible.The coolant temperature is
above 248°F (120°C)
The coolant is too hot and is no longer
cooling the engine.

Stop the vehicle as soon as possible
and turn off the engine. Allow engine
and coolant to cool.

Check the coolant level and add
coolant if necessary (
page 310).In case of accident
If the vehicle is leaking gasoline:

Do not start the engine under any cir-
cumstances.

Notify local fire and/or police authori-
ties.
If the extent of the damage cannot be de-
termined:

Notify an authorized Mercedes-Benz
Center.
If no damage can be determined on the


major assemblies


fuel system


engine mount:

Start the engine in the usual manner.

181 Controls in detail
Climate control (CLK 320)
Depending on production date, your vehi-
cle is equipped with either climate control
panel design A or B.Climate control panel design A
Climate control panel design B
Item
1
Left side air vent, adjustable
2
Thumbwheel for air volume control
for center air vents
3
Right side air vent, adjustable
4
Climate control panel
5
Right center air vent, adjustable
6
Thumbwheel for air volume control
for right side center air vent
7
Thumbwheel for air volume control
for left side center air vent
8
Left center air vent, adjustableiFor draft-free ventilation, move the
sliders for the side air vents1 and3
and center air vents5 and 8 to the
middle position.
Item
1
Air volume control
2
Left side temperature control
3
Right side temperature control
4
Air distribution control
5
Rear window defroster
6
AC cooling on/off (AC
OFF
or A/C)
7
Air distribution and air volume
(automatic mode)
8
Air recirculation
9
Defrosting

182 Controls in detailClimate control (CLK 320)The climate control is operational when-
ever the engine is running. You can oper-
ate the climate control system in either the
automatic or manual mode. The system
cools or heats the interior depending on
the selected interior temperature and the
current outside temperature.Nearly all dust particles, pollutants and
odors are filtered out before outside air en-
ters the passenger compartment through
the air distribution system.
The air conditioning will not engage (no
cooling) if the modeAC
OFF
is activated or
mode AC is deactivated (page 187).
Warning!
G
When operating the climate control, the air
that enters the passenger compartment
through the air vents in the footwell can be
very hot or very cold (depending on the set
temperature). This may cause burns or frost-
bite on unprotected skin in the immediate
area of the air vents. Always keep sufficient
distance between unprotected parts of the
body and the footwell air vents. If necessary,
change the air flow using the air distribution
controls to direct the air away from the foot-
well air vents (
page 184).
Warning!
G
Follow the recommended settings for heat-
ing and cooling given on the following pag-
es. Otherwise the windows could fog up,
impairing visibility and endangering you and
others.

187 Controls in detail
Climate control (CLK 320)
Deactivating
Press button, (
page 181).
The indicator lamp on the button goes
out.
The air recirculation mode is deactivated
automatically:


after five minutes if the outside
temperature is below
approximately 41°F (5°C)


after five minutes if the air conditioning
is turned off


after 30 minutes if the outside
temperature is above
approximately 41°F (5°C)At outside temperatures above 79°F
(26°C) the system will not automatically
switch back to outside air. A quantity of
outside air is added after approximately
30 minutes.
Air conditioning
The air conditioning is operational while
the engine is running and cools the interior
air to the temperature set by the operator.
iIf you keep button, pressed the
side windows will return to their
previous position.
iCondensation may drip out from under-
neath the vehicle. This is normal and
not an indication of a malfunction.Warning!
G
If you turn off the cooling function, the
vehicle will not be cooled when weather
conditions are warm. The windows can fog
up more quickly. Window fogging may
impair visibility and endanger you and
others.

188 Controls in detailClimate control (CLK 320)Deactivating
It is possible to deactivate the air condi-
tioning (cooling) function of the climate
control system. The air in the vehicle will
then no longer be cooled or dehumidified.
Climate control panel design A
Press button±(
page 181).
The indicator lamp on the button
comes on.
The cooling function switches off after
a short delay.
Climate control panel design B

Press button2(
page 181).
The indicator lamp on the button goes
out.
The cooling function switches off after
a short delay.Activating
Moist air can fog up the windows. You can
dehumidify the air with the air condition-
ing.
Climate control panel design A

Press button±(
page 181) again.
The indicator lamp on the button goes
out.
Climate control panel design B

Press button2(
page 181) again.
The indicator lamp on the button
comes on.
The air conditioning uses the
refrigerant R134a. This refrigerant is free
of CFCs which are harmful to the ozone
layer.
!If the air conditioning cannot be turned
on again, this indicates that the air
conditioning is losing refrigerant. The
compressor has turned itself off.
Have the air conditioning checked at
the nearest authorized Mercedes-Benz
Center.

191 Controls in detail
Automatic climate control (CLK 500/CLK 55 AMG)
Depending on production date, your vehi-
cle is equipped with either automatic
climate control panel design A or B.Automatic climate control panel design A
Automatic climate control panel design B
Item
1
Left side air vent, adjustable
2
Thumbwheel for air volume control
for center air vents
3
Right side air vent, adjustable
4
Automatic climate control panel
5
Right center air vent, adjustable
6
Thumbwheel for air volume control
for right side center air vent
7
Thumbwheel for air volume control
for left side center air vent
8
Left center air vent, adjustableiFor draft-free ventilation, move the slid-
ers for the center air vents1, 3, 5,
8 to the middle position.
Item
1
Left side air distribution control
2
Defrosting
3
Temperature control, left, raising
4
Display
5
Air volume control, raising
6
Temperature control, right, raising
7
Rear window defroster
8
Right side air distribution control
9
Charcoal filter
a
AC cooling on/off (AC
OFF
or A/C)
Residual heat/ventilation
b
Temperature control, right, lowering
c
Air volume control, lowering
d
Temperature control, left, lowering
e
Air recirculation
f
Automatic climate control on/off
(complete system)
g
Air distribution and air volume
(automatic mode)

192 Controls in detailAutomatic climate control (CLK 500/CLK 55 AMG)The automatic climate control is operation-
al whenever the engine is running. You can
operate the climate control system in ei-
ther the automatic or manual mode. The
system cools or heats the interior depend-
ing on the selected interior temperature
and the current outside temperature.Nearly all dust particles, pollutants and
odors are filtered out before outside air
enters the passenger compartment
through the air distribution system.
The air conditioning will not engage (no
cooling) if the modeAC
OFF
is activated or
mode AC is deactivated (page 198).
Warning
G
When operating the automatic climate
control, the air that enters the passenger
compartment through the air vents in the
footwell can be very hot or very cold
(depending on the set temperature). This
may cause burns or frostbite on unprotected
skin in the immediate area of the air vents.
Always keep sufficient distance between
unprotected parts of the body and the foot-
well air vents. If necessary change the air
flow using the air distribution controls to
direct the air away from the footwell air
vents (
page 194).
Warning!
G
Follow the recommended settings for
heating and cooling given on the following
pages. Otherwise the windows could fog up,
impairing visibility and endangering you and
others.
iSevere conditions (e.g. strong air
pollution) may require replacement of
the filter before its scheduled interval.
A clogged filter will reduce the air
volume to the interior.
If the vehicle interior is hot, ventilate
the interior before driving off, see
“Opening (Summer opening feature)”
(page 243).
Keep the air intake grille in front of the
windshield free of snow and debris.
Do not obstruct air flow by placing
objects on the air flow-through exhaust
slots below the rear window.